{
  "song_id": "01_恋人_20260512",
  "prompt": "Genre: Mandopop / Ballad; BPM: 140; Key: Eb Major; Rhythm: Laid-back pop-rock groove; kick on 1 & 3, snare on 2 & 4; clean 8th-note hats; on-the-grid; Instruments: Fingerpicked steel-string acoustic; clean electric bass; dry, tight drum kit; orchestral string section; high synth bell melody; Vocals: Male tenor; clean, slightly nasal timbre; gentle verse delivery; emotional, open chorus; light compression, clean reverb; Melody: Verse: narrow range, lands on tonic; Chorus: ascending arch, resolves down; Mood: Flipping through a photo album in a quiet room, dust motes dancing in a sunbeam.; Production: High-fidelity polish; vocal-centric mix; smooth compression; wide stereo strings; clean reverb.; Language: Mandarin; Highlight: The sudden entry of the full drum kit and bass on the downbeat of the first chorus, following the sparser, unresolved pre-chorus melody.",
  "title": "塑料页",
  "lyrics": "[intro]\n(Hook-DNA: Rhythmic pattern: dotted-eighth + sixteenth + quarter, on beat 1; Pitch anchor: circles the 5th, resolves to tonic; Repetition: motif repeats twice, then varies)\n(Inst: Fingerpicked steel-string acoustic guitar; high-pitched synth bell melody with long delay)\n(Chords: Ebmaj7 - Abmaj7 - Ebmaj7 - Abmaj7)\n(Mix: High-fidelity, clean mix. Acoustic guitar is warm and present. Synth bell has a long reverb tail. Centered, intimate soundstage. Transparent master bus compression.)\n\n(Transition: Smooth fade-in of instruments.)\n[verse]\n(Melody-Contour: Narrow range, conversational rhythm; short phrases land on tonic and mediant.)\n(Vocal-Perf: Soft, breathy chest voice; mezzo-piano; minimal vibrato.)\n(Inst: Acoustic guitar continues; clean electric bass enters, playing root notes on downbeats.)\n(Chords: Ebmaj7 - Abmaj7 - Gm7 - Cm7 - Fm7 - Bb7)\n软胶边缘有一层细微的阻力往回拉\n指腹停在那里 纸没有动弹\n午后的光把影子压得很短很扁\n落在某一张脸的左半边\n\n(Transition: Bass line becomes more melodic, subtle cymbal swell leads into pre-chorus.)\n[verse]\n(Melody-Contour: Narrow range, conversational rhythm; short phrases land on tonic and mediant.)\n(Vocal-Perf: Soft, breathy chest voice; mezzo-piano; minimal vibrato.)\n(Inst: Acoustic guitar continues; clean electric bass enters, playing root notes on downbeats.)\n(Chords: Ebmaj7 - Abmaj7 - Gm7 - Cm7 - Fm7 - Bb7)\n我根本不记得那天坐在哪个方向\n也不记得谁按下了快门往这边看\n只有你笑着 笑容的来由已经散\n像墨水渗进纸背 字都反了方向\n\n(Transition: Abm6 chord creates strong pull to chorus; vocal melody hangs unresolved, then full band enters on downbeat.)\n[chorus]\n(Hook-Recall: The repetitive rhythm echoes the intro's Hook-DNA motif.)\n(Melody-Contour: Wide ascending arch, peaks mid-phrase; resolves with a descending stepwise line.)\n(Melody-Harmonic-Tension: Melody hits major 7th over root Eb chord for bittersweet tension.)\n(Vocal-Perf: Full voice, mezzo-forte; open timbre with emotional strain; controlled vibrato.)\n(Inst: Full drum kit enters; lush orchestral strings provide sustained pads; acoustic guitar strums.)\n(Chords: Ebmaj7 - Abmaj7 - Gm7 - Cm7 - Fm7 - Bb7 - Ebmaj7)\n(Mix: Stereo field widens significantly with strings; vocal layered with subtle harmonies.)\n你肩上那一小块白\n是饭粒还是那天的光\n我盯着看 手没有翻这一页\n还是没认出那是什么\n翻不到最后一页\n就这样停着好像也没什么\n有些人不需要被记住\n也一直没有走\n\n(Transition: Strings hold final chord; cymbal decays into the quieter bridge.)\n[bridge]\n(Melody-Contour: New syncopated melodic idea; phrases build in length and intensity.)\n(Melody-Harmonic-Tension: Melody dwells on the 2nd and 4th over minor chords; final phrase resolves strongly to the tonic, setting up the final chorus.)\n(Vocal-Perf: Narrative and dynamic; alternates between soft and strong phrases; backing vocals enter.)\n(Inst: Arrangement thins out then rebuilds; bass becomes more melodic; strings swell.)\n(Chords: Abmaj7 - Gm7 - Cm7 - Fm7 - Bb7 - Abmaj7 - Gm7 - Cm7 - Fm7 - Bb7)\n照片背面有一行数字压进了纸里\n我横过来看 全是反的镜像\n那一天我在哪里 做了什么 想不起来\n但你笑着 和我记不记得无关\n那个日期是真实存在过的一天\n\n(Transition: Big drum fill and string swell leads directly into the final chorus.)\n[chorus]\n(Hook-Recall: The repetitive rhythm echoes the intro's Hook-DNA motif.)\n(Melody-Contour: Wide ascending arch, peaks mid-phrase; resolves with a descending stepwise line.)\n(Melody-Harmonic-Tension: Melody hits major 7th over root Eb chord for bittersweet tension; final phrase lands on 5th over the V chord, holding tension.)\n(Vocal-Perf: Most powerful delivery; ad-libs and harmonies added; sustained high notes.)\n(Inst: All elements at full intensity; strings play active counter-melodies; drums are powerful.)\n(Chords: Ebmaj7 - Abmaj7 - Gm7 - Cm7 - Fm7 - Bb7 - Ebmaj7)\n(Mix: Widest and loudest point of the song.)\n你肩上那一小块白\n是饭粒还是那天的光\n我盯着看 手没有翻这一页\n还是没认出那是什么\n翻不到最后一页\n就这样停着好像也没什么\n有些人不需要被记住\n也一直没有走\n\n(Transition: Music holds on the final chord, then fades.)\n[outro]\n(Inst: String section plays a final, mournful melody; acoustic guitar plays simple arpeggios; intro synth bell returns.)\n(Mix: All elements slowly fade out, leaving only reverb tails of strings and synth bell.)",
  "cover_prompt": "生成一张无字音乐专辑封面。风格严格参照 20 世纪 Color Field Painting（色域绘画），如 Mark Rothko 晚期作品的色层叠压逻辑与 Helen Frankenthaler 的浸染法（soak-stain technique）。画面的核心色彩与情绪：一片低饱和的旧纸米白色作为底层，中央有一块极浅的灰褐色晕染区域，边缘向四周漫开，带有轻微的暖黄色渗透痕迹，像一张被放置太久的老照片留在桌面上的光圈；最上层叠压一道窄而克制的尘灰蓝，仿佛百叶窗漏入的一缕午后侧光斜切过画面，模糊且不完整。整体色调极度低饱和，沉静，带有一种无法辨认的温度——不冷不暖，像记忆边缘的光线。技法要求：色彩之间的过渡必须模拟颜料在未上浆的粗纹棉布（raw cotton canvas）上自然渗透、晕开的效果，边界柔软但保留颜料浓度不均匀造成的自然深浅变化（pigment pooling）。画面需要呈现真实画布的编织肌理（woven canvas texture），局部可见稀薄处透出的底布纹路。整体色调偏低饱和、微微发灰（muted, desaturated palette），避免荧光感和数字渐变的均匀平滑。绝对禁止：任何文字/字母/拼音、人物或人物轮廓、具象物体、几何图案、锐利边缘、胶片颗粒滤镜、3D渲染质感。",
  "cover": {
    "template_id": 1,
    "template_name": "环境光晕流",
    "scene_description": "一片低饱和的旧纸米白色作为底层，中央有一块极浅的灰褐色晕染区域，边缘向四周漫开，带有轻微的暖黄色渗透痕迹，像一张被放置太久的老照片留在桌面上的光圈；最上层叠压一道窄而克制的尘灰蓝，仿佛百叶窗漏入的一缕午后侧光斜切过画面，模糊且不完整。整体色调极度低饱和，沉静，带有一种无法辨认的温度——不冷不暖，像记忆边缘的光线。"
  }
}